Grille



April Z, 1940. v,

J. A. GERMONF'REZ 2,195,412

GRILLE Filed Dec. 14, 1934 y INVENToR.

ORNE Y.

Patented 'pxn 2, 1940 UNITED sTATEs PATENT OFFICE GnmLE John A. .Germonprem Detroit, Mich., assignor, by

mesne assignments, to Barber-Colman Company, a corporation of Illinois Application December 14, 1934, Serial No. 757,493

4 Claims.

Another object of the invention is to provide a grille having a series of plates arranged vertically and adapted to produce converging air streams as air is blown therethrough.

A further object of the invention is to provide a grille through which air is adapted to be blown and arranged to divide the air stream into a series of smaller air streams converging toward each other to produce higher pressure areas vertically in relation to the face of the grille and lower pressure areas therebetween whereby the room air is drawn into the lower pressure areas to mix with the converging air streams.

Another object of the invention is to provide a ,o means for thoroughly mixing the incoming air scribed and claimed and the preferred form of construction by which these objects are attained is shown in the accompanying drawing in which- Fig. 1 is a face view of a grille embodying my invention.

Fig. 2 is a rear view of the grille.

Fig. 3 is a perspective view showing plate assembly.

Fig. 4 is a plan view illustrating diagrammatically the air streams produced in blowing air through the grille.

As shown in Fig. 3, each grille plate I is prothe grille vided with angular flanges 2 and each metal plate or strip is also formed to provide spacing shoulders 3. The metal between the spacing shoulders 3 is also `formed to provide openings 4 through which metal supports 5 may be inserted to allow assembly of the metal plates on the supports 5 which are arranged horizontally of the grille frame 6, as will be understood from Fig. l.v The plates I are assembled in the grille frame with all of the anges 2 in one section leading in one direction and the next section is provided with plates with all of the flanges extending in the opposite direction. This will be noted particularly from Fig. 1 in which all of the plates in section 1 are provided with flanges leading toward the right and all of the plates in section 8 are provided with anges leading toward the left. This is produced by merely reversing the 86 plates and by providing a spacing strip 9 of flat metal between the anged plates which is provided with apertures for the horizontal supporting rods 5. Section` III is again provided with plates having anges leading toward the right while companionA plates in section II are provided 5 with anges leading toward the left. The next set of plates in section I2 is provided with ilanges leading toward the right while in section I 3 the flanges lead toward vthe left.

In the assembly,` the plates are reversed and 10 placed in abutment between the sections 8 and I0, and I I and I2. This grille is placed in the end of an air inlet conduit opening into a room and is especially adapted for use in. air conduits in which the air blown through the grille is at a l5 different temperature than the air of the room into which the grille opens. 'When air is blown through the' grille, the flanges 2 of section 1 direct the air at an angle toward the right, as shown in Fig. 4, while the air passing through the section 8 is directed toward the left. Thus sections 1 and 8 provide a unit in which the air is blown through the grille and is directed into a series of converging streams which produce an increased pressure area. at about the'point I4. The air blowing throughl the sections I0 and II is also divided into converging air streams producing an increased pressure area. about the point I5 while -the air blowing through the sections I2 and I3 cause converging air streams which produce an ,o

increased pressure area at about the point IB. In cross section, these air streams take somewhat the form of a. Venturi tube resulting in low pressure areas at I1 and I8 between the converging Venturi formed air streams. These low pressure areas I'I and I8 are caused purposely so that the air in the room'is drawn into these low pressure areas from aboveand below the grille and as the room air is drawn into these low pressure areas it is thoroughly mixed with the air streams so that no decided change in the room temperature is noticed.

`The grille is preferably placed near the top of the room so that in blowing out into the room, the incoming air is carried across the top of the 5 room in suspension. When cooler air is mixed with the room air in this manner, the warmer room air near the ceiling is mixed with the cooler air entering through the grille and is carried well across the room before beginning to fall,.while`with a vgrille of the ordinary type the cold air passing into the room through the grille will immediately fall to the iioor and produce a. cold air current along the iioor of the room. It -is to overcome this and thoroughly mix the incoming air with the room air that this grille was developed and the further the cooler` air is carried across the ceiling of the room and mixed with the warmer air of the room,'the less will be the tendency of the cooler air to fall and produce a draft about the feet of the room occupants'. By producing converging air streams from different sections, the room air is thus drawn into the incoming air by aspiration and thoroughly mixed therewith.

From the foregoing description it becomes evident that the device is very simple and efflcient in operation, will not easily get out of order, is cheap and simple in assembly and provides a device which accomplishes the objects described.

Having thus fully described my invention, its utility and mode of operation, what I claim and desire to secure by Letters Patent of the United States is- 1. A grille comprising aseries of sections in which each section is provided with flanged plates extending transversely of the grille and provided with angular flanges adapted to direct the air at an angle to the face of the grille as it passes therethrough, the sections being arranged so that' one section directs the air in one direction while the adjacent section directs the air in the opposite direction to produce converging air streams and the diierent sections being arranged to produce low pressure areas between the converging air streams. l

2. A grille comprising a series of sections in which each section is provided with flanged plates extending transversely of the grille, the

plates being provided with angular flanges adapted to direct air passing therethrough at an angle and the sections being arranged so that one section directs the air in one direction while the adjacent section directs the air in the opposite direction to produce converging air streams and the different sections being arranged to produce low pressure areas between the converging air streams.

3. A grille through which air is adapted to be blown comprising a series of sections arranged in pairs and each composed of a plurality of fins arranged edgewise to the direction of air flow, each pair of sections comprising a section adapted to direct air at an Vangle in one direction and a section adapted to direct air in the opposite direction to produce a pair of converging air streams and the series oi.' sections being arranged= to produce low pressure areas between the converging air streams across the -face of the grille.`

4. A grille arrangement through which air is adapted to be blown comprising a plurality of grille parts arranged in pairs and each pair composed of vertically disposed fins arranged endwise to the direction of air iiow, each Apair of grille parts comprising a section adapted to direct air at an angle in one direction and a section adapted to direct air in the opposite direction to produce a. pair of converging air streams, and the plurality of grille parts being arranged to produce low pressure areas between the converging air streams.

JOHN A. GERMONPREZ. 

